linux-kernel - Re: [PATCH v3 03/13] dt-bindings: usb: Add binding for Cypress cypd4226 I2C driver

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Date:   Wed, 16 Nov 2022 15:14:28 -0600
From:   Rob Herring <robh@...nel.org>
To:     Wayne Chang <waynec@...dia.com>
Cc:     gregkh@...uxfoundation.org, krzysztof.kozlowski+dt@...aro.org,
        treding@...dia.com, jonathanh@...dia.com, thierry.reding@...il.com,
        heikki.krogerus@...ux.intel.com, ajayg@...dia.com,
        vkoul@...nel.org, p.zabel@...gutronix.de, balbi@...nel.org,
        mathias.nyman@...el.com, jckuo@...dia.com,
        linux-usb@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, singhanc@...dia.com,
        linux-i2c@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH v3 03/13] dt-bindings: usb: Add binding for Cypress
 cypd4226 I2C driver

On Mon, Nov 14, 2022 at 08:40:43PM +0800, Wayne Chang wrote:
> add device-tree binding documentation for Cypress cypd4226 type-C
> controller's I2C interface. It is a standard I2C slave with GPIO
> input as IRQ interface.

For the subject:

dt-bindings: usb: Add Cypress cypd4226 Type-C controller

> 
> Signed-off-by: Wayne Chang <waynec@...dia.com>
> ---
> V2 -> V3:fix additionalProperties warning on new schema
> V1 -> V2:based on the review comments. Fix some addressed issues on
> description, interrupts, cypress,firmware-build, connector, and 
> additionalProperties properties. And also remove the status in the example.
>  .../bindings/usb/cypress,cypd4226.yaml        | 86 +++++++++++++++++++
>  1 file changed, 86 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> 
> diff --git a/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> new file mode 100644
> index 000000000000..854fe2f9181c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/usb/cypress,cypd4226.yaml
> @@ -0,0 +1,86 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/usb/cypress,cypd4226.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Cypress cypd4226 UCSI I2C Type-C Controller
> +
> +maintainers:
> +  - Wayne Chang <waynec@...dia.com>
> +
> +description:
> +  The Cypress cypd4226 UCSI I2C type-C controller is a I2C interface type-C
> +  controller.
> +
> +properties:
> +  compatible:
> +    const: cypress,cypd4226
> +
> +  '#address-cells':
> +    const: 1
> +
> +  '#size-cells':
> +    const: 0
> +
> +  reg:
> +    const: 0x08
> +
> +  interrupts:
> +    items:
> +      - description: cypd4226 I2C interrupt
> +
> +  cypress,firmware-build:
> +    enum:
> +      - nvidia,gpu
> +      - nvidia,jetson-agx-xavier
> +    description: |
> +      the name of the CCGx firmware built for product series.
> +      should be set one of following:
> +      - "nvidia,gpu" for the NVIDIA RTX product series
> +      - "nvidia,jetson-agx-xavier" for the NVIDIA Jetson product series

Standard 'firmware-name' property doesn't work for you?

> +
> +patternProperties:
> +  '^connector@[0-1]+$':
> +    $ref: /schemas/connector/usb-connector.yaml#
> +    properties:
> +      reg:
> +        maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/gpio/tegra194-gpio.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +    i2c {
> +      #address-cells = <1>;
> +      #size-cells = <0>;
> +      #interrupt-cells = <2>;
> +
> +      ucsi-ccg@8 {
> +        compatible = "cypress,cypd4226";
> +        interrupt-parent = <&gpio_aon>;
> +        interrupts = <TEGRA194_AON_GPIO(BB, 2) IRQ_TYPE_LEVEL_LOW>;
> +        reg = <0x08>;
> +        cypress,firmware-build = "nvidia,jetson-agx-xavier";
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        ccg_typec_con0: connector@0 {
> +          compatible = "usb-c-connector";
> +          reg = <0>;
> +          label = "USB-C";
> +          data-role = "dual";
> +          port {
> +            ucsi_ccg_p0: endpoint {
> +              remote-endpoint = <&usb_role_switch0>;
> +            };
> +          };
> +        };
> +      };
> +    };
> -- 
> 2.25.1
> 
>